Buggy code:
@ DesignerComponent ( version = YaVersion . WEBVIEWER_COMPONENT_VERSION , category = ComponentCategory . USERINTERFACE , description = "Component<seq2seq4repair_space>for<seq2seq4repair_space>viewing<seq2seq4repair_space>Web<seq2seq4repair_space>pages.<seq2seq4repair_space>The<seq2seq4repair_space>Home<seq2seq4repair_space>URL<seq2seq4repair_space>can<seq2seq4repair_space>be<seq2seq4repair_space>" + ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( "specified<seq2seq4repair_space>in<seq2seq4repair_space>the<seq2seq4repair_space>Designer<seq2seq4repair_space>or<seq2seq4repair_space>in<seq2seq4repair_space>the<seq2seq4repair_space>Blocks<seq2seq4repair_space>Editor.<seq2seq4repair_space>The<seq2seq4repair_space>view<seq2seq4repair_space>can<seq2seq4repair_space>be<seq2seq4repair_space>set<seq2seq4repair_space>" + "to<seq2seq4repair_space>follow<seq2seq4repair_space>links<seq2seq4repair_space>when<seq2seq4repair_space>they<seq2seq4repair_space>are<seq2seq4repair_space>tapped,<seq2seq4repair_space>and<seq2seq4repair_space>users<seq2seq4repair_space>can<seq2seq4repair_space>fill<seq2seq4repair_space>in<seq2seq4repair_space>Web<seq2seq4repair_space>forms.<seq2seq4repair_space>" ) + "Warning:<seq2seq4repair_space>This<seq2seq4repair_space>is<seq2seq4repair_space>not<seq2seq4repair_space>a<seq2seq4repair_space>full<seq2seq4repair_space>browser.<seq2seq4repair_space>For<seq2seq4repair_space>example,<seq2seq4repair_space>pressing<seq2seq4repair_space>the<seq2seq4repair_space>phone's<seq2seq4repair_space>" ) + "hardware<seq2seq4repair_space>Back<seq2seq4repair_space>key<seq2seq4repair_space>will<seq2seq4repair_space>exit<seq2seq4repair_space>the<seq2seq4repair_space>app,<seq2seq4repair_space>rather<seq2seq4repair_space>than<seq2seq4repair_space>move<seq2seq4repair_space>back<seq2seq4repair_space>in<seq2seq4repair_space>the<seq2seq4repair_space>" ) + "browser<seq2seq4repair_space>history." ) + "<p<seq2seq4repair_space>//>You<seq2seq4repair_space>can<seq2seq4repair_space>use<seq2seq4repair_space>the<seq2seq4repair_space>WebViewer.WebViewString<seq2seq4repair_space>property<seq2seq4repair_space>to<seq2seq4repair_space>communicate<seq2seq4repair_space>" ) + "between<seq2seq4repair_space>your<seq2seq4repair_space>app<seq2seq4repair_space>and<seq2seq4repair_space>Javascript<seq2seq4repair_space>code<seq2seq4repair_space>running<seq2seq4repair_space>in<seq2seq4repair_space>the<seq2seq4repair_space>Webviewer<seq2seq4repair_space>page.<seq2seq4repair_space>" ) + "In<seq2seq4repair_space>the<seq2seq4repair_space>app,<seq2seq4repair_space>you<seq2seq4repair_space>get<seq2seq4repair_space>and<seq2seq4repair_space>set<seq2seq4repair_space>WebViewString.<seq2seq4repair_space>" ) + "In<seq2seq4repair_space>the<seq2seq4repair_space>WebViewer,<seq2seq4repair_space>you<seq2seq4repair_space>include<seq2seq4repair_space>Javascript<seq2seq4repair_space>that<seq2seq4repair_space>references<seq2seq4repair_space>the<seq2seq4repair_space>window.AppInventor<seq2seq4repair_space>" ) + "object,<seq2seq4repair_space>using<seq2seq4repair_space>the<seq2seq4repair_space>methoods<seq2seq4repair_space><//em<seq2seq4repair_space>getWebViewString()<//em><seq2seq4repair_space>and<seq2seq4repair_space><em>setWebViewString(text)<//em>.<seq2seq4repair_space>" ) + "<p<seq2seq4repair_space>//>For<seq2seq4repair_space>example,<seq2seq4repair_space>if<seq2seq4repair_space>the<seq2seq4repair_space>WebViewer<seq2seq4repair_space>opens<seq2seq4repair_space>to<seq2seq4repair_space>a<seq2seq4repair_space>page<seq2seq4repair_space>that<seq2seq4repair_space>contains<seq2seq4repair_space>the<seq2seq4repair_space>Javascript<seq2seq4repair_space>command<seq2seq4repair_space>" ) + "<br<seq2seq4repair_space>//><seq2seq4repair_space><em>document.write(\"The<seq2seq4repair_space>answer<seq2seq4repair_space>is\"<seq2seq4repair_space>+<seq2seq4repair_space>window.AppInventor.getWebViewString());<//em><seq2seq4repair_space>" ) + "<br<seq2seq4repair_space>//>and<seq2seq4repair_space>if<seq2seq4repair_space>you<seq2seq4repair_space>set<seq2seq4repair_space>WebView.WebVewString<seq2seq4repair_space>to<seq2seq4repair_space>\"hello\",<seq2seq4repair_space>then<seq2seq4repair_space>the<seq2seq4repair_space>web<seq2seq4repair_space>page<seq2seq4repair_space>will<seq2seq4repair_space>show<seq2seq4repair_space>" ) + "<//br<seq2seq4repair_space>><em>The<seq2seq4repair_space>answer<seq2seq4repair_space>is<seq2seq4repair_space>hello<//em>.<seq2seq4repair_space>" ) + "<br<seq2seq4repair_space>//>And<seq2seq4repair_space>if<seq2seq4repair_space>the<seq2seq4repair_space>Web<seq2seq4repair_space>page<seq2seq4repair_space>contains<seq2seq4repair_space>Javascript<seq2seq4repair_space>that<seq2seq4repair_space>executes<seq2seq4repair_space>the<seq2seq4repair_space>command<seq2seq4repair_space>" ) + "<br<seq2seq4repair_space>//><em>windowAppInventor.setWebViewString(\"hello<seq2seq4repair_space>from<seq2seq4repair_space>Javascript\")<//em>,<seq2seq4repair_space>" ) + "<br<seq2seq4repair_space>//>then<seq2seq4repair_space>the<seq2seq4repair_space>value<seq2seq4repair_space>of<seq2seq4repair_space>the<seq2seq4repair_space>WebViewString<seq2seq4repair_space>property<seq2seq4repair_space>will<seq2seq4repair_space>be<seq2seq4repair_space>" ) + "<br<seq2seq4repair_space>//><em>hello<seq2seq4repair_space>from<seq2seq4repair_space>Javascript<//em>.<seq2seq4repair_space>" ) ) @ SimpleObject @ UsesPermissions ( permissionNames = "android.permission.INTERNET" ) public final class WebViewer extends AndroidViewComponent { private final WebView webview ; private String homeUrl ; private boolean followLinks = true ; private boolean prompt = true ; private boolean ignoreSslErrors = false ; WebViewer . WebViewInterface wvInterface ; public WebViewer ( ComponentContainer container ) { } @ SimpleProperty ( description = "Gets<seq2seq4repair_space>the<seq2seq4repair_space>WebView's<seq2seq4repair_space>String,<seq2seq4repair_space>which<seq2seq4repair_space>is<seq2seq4repair_space>viewable<seq2seq4repair_space>through<seq2seq4repair_space>" + "Javascript<seq2seq4repair_space>in<seq2seq4repair_space>the<seq2seq4repair_space>WebView<seq2seq4repair_space>as<seq2seq4repair_space>the<seq2seq4repair_space>window.AppInventor<seq2seq4repair_space>object" , category = PropertyCategory . BEHAVIOR ) public String WebViewString ( ) { } @ SimpleProperty ( category = PropertyCategory . BEHAVIOR ) public void WebViewString ( String newString ) { } @ Override public View getView ( ) { } private class WebViewerClient extends WebViewClient { @ Override public boolean shouldOverrideUrlLoading ( WebView view , String url ) { } } @ Override @ SimpleProperty public void Width ( int width ) { } @ Override @ SimpleProperty public void Height ( int height ) { } @ SimpleProperty ( description = "URL<seq2seq4repair_space>of<seq2seq4repair_space>the<seq2seq4repair_space>page<seq2seq4repair_space>the<seq2seq4repair_space>WebViewer<seq2seq4repair_space>should<seq2seq4repair_space>initially<seq2seq4repair_space>open<seq2seq4repair_space>to.<seq2seq4repair_space>" + "Setting<seq2seq4repair_space>this<seq2seq4repair_space>will<seq2seq4repair_space>load<seq2seq4repair_space>the<seq2seq4repair_space>page." , category = PropertyCategory . BEHAVIOR ) public String HomeUrl ( ) { } @ DesignerProperty ( editorType = PropertyTypeConstants . PROPERTY_TYPE_STRING , defaultValue = "" ) @ SimpleProperty public void HomeUrl ( String url ) { } @ SimpleProperty ( description = "URL<seq2seq4repair_space>of<seq2seq4repair_space>the<seq2seq4repair_space>page<seq2seq4repair_space>currently<seq2seq4repair_space>viewed.<seq2seq4repair_space>This<seq2seq4repair_space>could<seq2seq4repair_space>be<seq2seq4repair_space>different<seq2seq4repair_space>from<seq2seq4repair_space>the<seq2seq4repair_space>" + "Home<seq2seq4repair_space>URL<seq2seq4repair_space>if<seq2seq4repair_space>new<seq2seq4repair_space>pages<seq2seq4repair_space>were<seq2seq4repair_space>visited<seq2seq4repair_space>by<seq2seq4repair_space>following<seq2seq4repair_space>links." , category = PropertyCategory . BEHAVIOR ) public String CurrentUrl ( ) { } @ SimpleProperty ( description = "Title<seq2seq4repair_space>of<seq2seq4repair_space>the<seq2seq4repair_space>page<seq2seq4repair_space>currently<seq2seq4repair_space>viewed" , category = PropertyCategory . BEHAVIOR ) public String CurrentPageTitle ( ) { } @ SimpleProperty ( description = "Determines<seq2seq4repair_space>whether<seq2seq4repair_space>to<seq2seq4repair_space>follow<seq2seq4repair_space>links<seq2seq4repair_space>when<seq2seq4repair_space>they<seq2seq4repair_space>are<seq2seq4repair_space>tapped<seq2seq4repair_space>in<seq2seq4repair_space>the<seq2seq4repair_space>WebViewer.<seq2seq4repair_space>" + "If<seq2seq4repair_space>you<seq2seq4repair_space>follow<seq2seq4repair_space>links,<seq2seq4repair_space>you<seq2seq4repair_space>can<seq2seq4repair_space>use<seq2seq4repair_space>GoBack<seq2seq4repair_space>and<seq2seq4repair_space>GoForward<seq2seq4repair_space>to<seq2seq4repair_space>navigate<seq2seq4repair_space>the<seq2seq4repair_space>browser<seq2seq4repair_space>history.<seq2seq4repair_space>" , category = PropertyCategory . BEHAVIOR ) public boolean FollowLinks ( ) { } @ DesignerProperty ( editorType = PropertyTypeConstants . PROPERTY_TYPE_BOOLEAN , defaultValue = "True" ) @ SimpleProperty public void FollowLinks ( boolean follow ) { } @ SimpleProperty ( description = "Determine<seq2seq4repair_space>whether<seq2seq4repair_space>or<seq2seq4repair_space>not<seq2seq4repair_space>to<seq2seq4repair_space>ignore<seq2seq4repair_space>SSL<seq2seq4repair_space>errors.<seq2seq4repair_space>Set<seq2seq4repair_space>to<seq2seq4repair_space>true<seq2seq4repair_space>to<seq2seq4repair_space>ignore<seq2seq4repair_space>" + "errors.<seq2seq4repair_space>Use<seq2seq4repair_space>this<seq2seq4repair_space>to<seq2seq4repair_space>accept<seq2seq4repair_space>self<seq2seq4repair_space>signed<seq2seq4repair_space>certificates<seq2seq4repair_space>from<seq2seq4repair_space>websites." , category = PropertyCategory . BEHAVIOR ) public boolean IgnoreSslErrors ( ) { } @ DesignerProperty ( editorType = PropertyTypeConstants . PROPERTY_TYPE_BOOLEAN , defaultValue = "False" ) @ SimpleProperty public void IgnoreSslErrors ( boolean ignoreSslErrors ) { } @ SimpleFunction ( description = "Loads<seq2seq4repair_space>the<seq2seq4repair_space>home<seq2seq4repair_space>URL<seq2seq4repair_space>page.<seq2seq4repair_space>This<seq2seq4repair_space>happens<seq2seq4repair_space>automatically<seq2seq4repair_space>when<seq2seq4repair_space>" + "the<seq2seq4repair_space>home<seq2seq4repair_space>URL<seq2seq4repair_space>is<seq2seq4repair_space>changed." ) public void GoHome ( ) { } @ SimpleFunction ( description = "Go<seq2seq4repair_space>back<seq2seq4repair_space>to<seq2seq4repair_space>the<seq2seq4repair_space>previous<seq2seq4repair_space>page<seq2seq4repair_space>in<seq2seq4repair_space>the<seq2seq4repair_space>history<seq2seq4repair_space>list.<seq2seq4repair_space>" + "Does<seq2seq4repair_space>nothing<seq2seq4repair_space>if<seq2seq4repair_space>there<seq2seq4repair_space>is<seq2seq4repair_space>no<seq2seq4repair_space>previous<seq2seq4repair_space>page." ) public void GoBack ( ) { } @ SimpleFunction ( description = "Go<seq2seq4repair_space>forward<seq2seq4repair_space>to<seq2seq4repair_space>the<seq2seq4repair_space>next<seq2seq4repair_space>page<seq2seq4repair_space>in<seq2seq4repair_space>the<seq2seq4repair_space>history<seq2seq4repair_space>list.<seq2seq4repair_space>" + "Does<seq2seq4repair_space>nothing<seq2seq4repair_space>if<seq2seq4repair_space>there<seq2seq4repair_space>is<seq2seq4repair_space>no<seq2seq4repair_space>next<seq2seq4repair_space>page." ) public void GoForward ( ) { } @ SimpleFunction ( description = "Returns<seq2seq4repair_space>true<seq2seq4repair_space>if<seq2seq4repair_space>the<seq2seq4repair_space>WebViewer<seq2seq4repair_space>can<seq2seq4repair_space>go<seq2seq4repair_space>forward<seq2seq4repair_space>in<seq2seq4repair_space>the<seq2seq4repair_space>history<seq2seq4repair_space>list." ) public boolean CanGoForward ( ) { } @ SimpleFunction ( description = "Returns<seq2seq4repair_space>true<seq2seq4repair_space>if<seq2seq4repair_space>the<seq2seq4repair_space>WebViewer<seq2seq4repair_space>can<seq2seq4repair_space>go<seq2seq4repair_space>back<seq2seq4repair_space>in<seq2seq4repair_space>the<seq2seq4repair_space>history<seq2seq4repair_space>list." ) public boolean CanGoBack ( ) { } @ SimpleFunction ( description = "Load<seq2seq4repair_space>the<seq2seq4repair_space>page<seq2seq4repair_space>at<seq2seq4repair_space>the<seq2seq4repair_space>given<seq2seq4repair_space>URL." ) public void GoToUrl ( String url ) { } @ DesignerProperty ( editorType = PropertyTypeConstants . PROPERTY_TYPE_BOOLEAN , defaultValue = "False" ) @ SimpleProperty ( userVisible = false , description = "Whether<seq2seq4repair_space>or<seq2seq4repair_space>not<seq2seq4repair_space>to<seq2seq4repair_space>give<seq2seq4repair_space>the<seq2seq4repair_space>application<seq2seq4repair_space>permission<seq2seq4repair_space>to<seq2seq4repair_space>use<seq2seq4repair_space>the<seq2seq4repair_space>Javascript<seq2seq4repair_space>geolocation<seq2seq4repair_space>API.<seq2seq4repair_space>" + "This<seq2seq4repair_space>property<seq2seq4repair_space>is<seq2seq4repair_space>available<seq2seq4repair_space>only<seq2seq4repair_space>in<seq2seq4repair_space>the<seq2seq4repair_space>designer." ) public void UsesLocation ( boolean uses ) { } @ SimpleProperty ( description = "If<seq2seq4repair_space>True,<seq2seq4repair_space>then<seq2seq4repair_space>prompt<seq2seq4repair_space>the<seq2seq4repair_space>user<seq2seq4repair_space>of<seq2seq4repair_space>the<seq2seq4repair_space>WebView<seq2seq4repair_space>to<seq2seq4repair_space>give<seq2seq4repair_space>permission<seq2seq4repair_space>to<seq2seq4repair_space>access<seq2seq4repair_space>the<seq2seq4repair_space>geolocation<seq2seq4repair_space>API.<seq2seq4repair_space>" + "If<seq2seq4repair_space>False,<seq2seq4repair_space>then<seq2seq4repair_space>assume<seq2seq4repair_space>permission<seq2seq4repair_space>is<seq2seq4repair_space>granted." ) public boolean PromptforPermission ( ) { } @ DesignerProperty ( editorType = PropertyTypeConstants . PROPERTY_TYPE_BOOLEAN , defaultValue = "True" ) @ SimpleProperty ( userVisible = true ) public void PromptforPermission ( boolean prompt ) { } @ SimpleFunction ( description = "Clear<seq2seq4repair_space>stored<seq2seq4repair_space>location<seq2seq4repair_space>permissions." ) public void ClearLocations ( ) { } private void resetWebViewClient ( ) { } @ SimpleFunction ( description = "Clear<seq2seq4repair_space>WebView<seq2seq4repair_space>caches." ) public void ClearCaches ( ) { } @ SimpleFunction ( description = "Run<seq2seq4repair_space>JavaScript<seq2seq4repair_space>method." ) public void RunJavaScript ( String functionName , String inputs ) { } @ SimpleFunction ( description = "Create<seq2seq4repair_space>JavaScript<seq2seq4repair_space>function." ) public void CreateJavaScriptFunction ( String functionName , String inputs , String function ) { <START_BUG> webview . loadUrl ( ( ( ( ( ( ( "javascript:<seq2seq4repair_space>function<seq2seq4repair_space>" + functionName ) + "(" ) + inputs ) + ")<seq2seq4repair_space>{<seq2seq4repair_space>" ) + function ) + "<seq2seq4repair_space>};" ) ) ; <END_BUG> } @ SimpleFunction ( description = "Get<seq2seq4repair_space>JavaScript<seq2seq4repair_space>return<seq2seq4repair_space>value." ) public String GetJavaScriptReturnValue ( ) { } @ SimpleFunction ( description = "Create<seq2seq4repair_space>a<seq2seq4repair_space>JavaScript<seq2seq4repair_space>variable." ) public void CreateJavaScriptVariable ( String variableName , String value ) { } @ SimpleFunction ( description = "Create<seq2seq4repair_space>a<seq2seq4repair_space>JavaScript<seq2seq4repair_space>object." ) public void CreateJavaScriptObject ( String variableName , String attributes , String attributeValues ) { } public class WebViewInterface { Context mContext ; String webViewString ; String returnString ; WebViewInterface ( Context c ) { } @ JavascriptInterface public String getWebViewString ( ) { } @ JavascriptInterface public void runMethod ( String value ) { } @ JavascriptInterface public String getReturnString ( ) { } public void setWebViewString ( String newString ) { } } }

Fix:
webview . loadUrl ( ( ( ( ( ( ( "javascript:<seq2seq4repair_space>function<seq2seq4repair_space>" + functionName ) + "(" ) + inputs ) + ")<seq2seq4repair_space>{<seq2seq4repair_space>" ) + function ) + ";<seq2seq4repair_space>}" ) ) ;